Rotary harrow.



J. H. ALLEN.

.ROTARY HARROW.

APPLICATION FILED AUG-I6. 19H.

Patented Oct. 1, 1918.

2 SHEETS-SHEET 1- J. H. ALLEN.

ROTARY HARROW.

APPLICATION FILED AUGJS. m1.

Patented Oct. 1, 1918. 2 SHEETS-SHEET 2 wAsnmonm. n. c,

s and? rib.

JOHN HENRY ALLEN, OF NORTH YVAKIMA, WASHINGTON.

:ao'rAaY HABRQW.

manner.

To all whom it may concern:

Be it known that I, JOHN HENRY ALLEN, a citizen of the United States, residing at North Yakima, in the county of Yakima and State of Washington, have invented new and useful Improvements in Rotary Harrows, of which the following is a specification.

The present invention has reference gener ally to harrows and diggers and more particularly relates to a rotary harrow.

As the principal aim and'object this invention contemplates the provision of a device of the above character the construction of which permits of the same being adjusted to assume a position for tilling the soil or to assume a position so as to be readily transported when desired without tilling or acting on the soil.

More particularly, this invention embraces the provision of a device of the above character wherein circular teeth carrying frames are employed and movably connected to the main supporting frame so as to be either swung into a horizontal operating or tilling position with respect to the main supporting frame or swung into a vertical position relative to the frame for facilitating the transportation of the frame.

As a further improvement this invention includes the provision of a rotary harrow wherein improved means are provided for removably fastening the axles longitudinally of the main frame or axle.

It is a more specific object of this invention to provide a device of the above character wherein the harrow frames are of novel construction to permit of the attaching of .the soil treating teeth thereto in a convenient manner.

Among the other aims and objects of this invention may be recited the provision of a device of the above character with a view to compactness, and wherein the number of parts are few, the construction simple, the cost of production low and the efliciency hi h.

ther improvements and novel details in the construction and arrangement of the various parts of the apparatus will be brought out more in detail in the description to follow, which for a clear understanding of the invention should be considered in connection with the accompanying drawings forming a part hereof, and wherein is disclosed for the purpose of illustration a con- Patented Oct. l, 1918.

Application filed August 16, 1917. SerialNo. 186,576.

venient and satisfactory embodiment of the invention. It is to be noted in this connection that minor changes in the construction and arrangement of parts may be made without departing from the principle of operation of the various parts.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a top plan view of the device in an operative or tilling position;

Fig. 2 is a front elevation thereof showing the device in a tilling position;

Fig. 3 is a front elevation of the same in a position ready to be transported;

Fig. 4 is an enlarged sectional detail taken on line l4 of Fig. 2; and

Fig. 5 is a horizontal section taken on line 5-5 of Fig. 4.

Similar characters of reference are employed in all of the above described views, to indicate corresponding parts.

Referring now, more particularly, to the accompanying drawings there is provided a main sectional frame indicated generally by the numeral 1 comprising a bar or timber 2 of a rectangular configuration in cross section and to the respective ends of which are connected channel sections 3, the latter being preferably straddled about and arranged in close relation with the under and side surfaces of the bar and rigidly secured in such position desirably through the instrumentality of transversely extending bolts 4 the projecting ends ofwhich are engaged by nuts 5. The outer ends of the channel sec-' by means of eye bolts Sand are designed for vertical swinging movement so as to be removably arranged in the adjacent recesses 6 for a purpose that will presently appear. Filler blocks 8 are arranged about the bolts between the opposite sides of the axle and the side of the channel sections. The outer ends of the axles are reduced and journaled as at 9 forming shoulders 10 while harrow frames 11 are journaled on the reduced ends 9 of the axles and retained against accidental displacement by nuts 12.

In the present instance, each frame 11 is circular in form and constitutes a wheel consisting of a hub 13 journaled on the adjacent reduced and rounded end and provided with an annular groove 14: in its periphery. Arcuate channel sections 15 are now disposed in the grooves and accommodate radiating spokes 16 formed desirably of angle iron, the outer ends of which are 20 and project at right angles from the outer sideonly-ofeach spoke of the wheel as indieated. Subsequent to the arranging of the harrow frames in position dust caps 21 are connected 'to the outer edges of the hubs. When the axles are arranged vertically of the main frame the teeth .of the frames ongage the ground for tilling purposes; h0wever it is apparent that upon swinging of the axles to positionslongitudinally of the main frame the harrmv frames are positioned vertically of the main frame and act as wheels for facilitating transportation. Bolts 22 are reniovably arranged transversely through the channel sections and the inner .ends of the axles when the axles lie Within these sections-so as to the rigidly retained against accidental swinging. Filler blOGliS23 may be arranged about the bolts between the axle and the sides of the channel sections for preventing unnecessary movement while nuts 24 are employed for engagement with the bolts.

Suitable means may be employed for moving the harrow, in the present instance a draft device being attached thereto which consists of draw rods 25 the inner ends of which are looped as at 26 and mounted in the eye bolts 8 while the outer portions are secured to the ends of a tongue support as at 27 preparatory to being rigidly connected upon opposite sides of. a tongue 28 which extends from the support 27.

The mode of operation of the present invention may be reviewed as follows:

Assuming that the parts have been assem- Tbled in the manner described and as inclicated in the drawings, especially in Figs. 1

and 2, upon forward movementof the device the harrow teeth harrow or till the soil and if a rock is struck the entire harrow frame 11 will partially rotate on the corresponding axle 9 until released. Inasmuch as the harrow frames are capable of-being swung with respect to the main frame the harrow may be these frames are circular and rotatably mounted they constitute wheels to faCllltftlle the transportation of the device.

As many changes could :be made in the above construction and 'many apparently widely difierent embodiments of this invention could be'made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limited sense. It is also to be understood that the language used n the following vertical swinging movement at the outer ends of the channel sections, means for re- ,movably fastening the axles longitudinally of the channel sections, .eireular shaped harrow frames journaled on the axles and 0011-.

stituting wheels for facilitating the trans portation of the device when the axles are positioned longitudinally, and teeth proj ect-ing at right angles from the outer sides of the :harrow frames for engagement with the ground when the axles are swung into a vertical position. 1

In testlmony whereof I affix my slgnature.

JQHN HENRY ALLEN.

Copies of thispatent may be obtained for five cents each, by addressing the :Commissioirer :of Patents, e Washington, D. G. 

